@alysee: I love dress #3, but to match navy, #2 would be better. If the guys are in navy,why not put the girls in navy? Or try and match the grooms colours with yours. It might look a bit odd in photos for two totally diff colours.

I like the 3rd one. 2 is too grayish and 1 is too bright and wouldn’t go as well with the navy suits. 3 is a good in between and I think it would look best on a variety of skin tones. 2 would probably be the most complementary to the navy though